part ofin_lateral_side_ofbranching_part_ofinternal carotid arteryposterior communicating arteryAn artery that connects caudal division of the internal carotid artery and the basal communicating artery to the basilar artery. Isogai et al. 2001.[TAO]EHDAA2:0004518EHDAA:3352EMAPA:18600FMA:50084MA:0002023One of a pair of right-sided and left-sided blood vessels in the circle of Willis. It connects the three cerebral arteries of the same side. Anteriorly, it is one portion of the terminal trifurcation of the internal carotid artery. The anterior cerebral artery and the middle cerebral artery are the other two branches of the trifurcation. Posteriorly, it communicates with the posterior cerebral artery.OpenCyc:Mx4rwDDlqpwpEbGdrcN5Y29ycAPCAPCSRETIRED_EHDAA2:0001487TAO:0005001UBERON:0001628UMLS:C0149559ZFA:0005001arteria cerebri communicans posteriorcaudal communicating segmentposterior communicating segment of the basilar arterytodo - verify ZFA link: An artery that connects caudal division of the internal carotid artery and the basal communicating artery to the basilar arteryuberonhead blood vesselcircle of Willissystemic arterycommunicating arteryanterior communicating arterylateral structure